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List phrases that spell out is 

We found 64 dictionaries with English definitions that include the word is: Click on the first link on a line below to go directly to a page where "is" is defined. General (31 matching dictionaries) Is, is, is-: American Heritage Dictionary of the English Language [home, info] I's, Is, is, is-: Collins English Dictionary [home, info] is: Vocabulary.com [home, info] is: Macmillan Dictionary [home, info] I's, is: Merriam-Webster's Online Dictionary, 11th Edition [home, info] I.S, IS, I's, I.'s, Is, Is, Is, i's, is, is, is, is, is, is, is, is-, iS, i'S: Wordnik [home, info] i's, is: Cambridge Advanced Learner's Dictionary [home, info] IS, I's, -is, .is, is-: Wiktionary [home, info] is: Compact Oxford English Dictionary [home, info] is, is-: Webster's New World College Dictionary, 4th Ed. [home, info] Is, is: The Wordsmyth English Dictionary-Thesaurus [home, info] is: Infoplease Dictionary [home, info] Is-, Is, .is, i's, is, is-: Dictionary.com [home, info] is: Online Etymology Dictionary [home, info] is: UltraLingua English Dictionary [home, info] is: Cambridge Dictionary of American English [home, info] is, is: Cambridge International Dictionary of Idioms [home, info] I.S, I.S. (Aiesu), I.S. (manga), IS (manga), IS, I''s, I's, Is (band), Is (verb), Is, .is: Wikipedia, the Free Encyclopedia [home, info] Is-, Is: Online Plain Text English Dictionary [home, info] is, is-: Webster's Revised Unabridged, 1913 Edition [home, info] Is-, Is: AllWords.com Multi-Lingual Dictionary [home, info] is: Webster's 1828 Dictionary [home, info] is, is-: MyWord.info [home, info] IS, Is, .is: Stammtisch Beau Fleuve Acronyms [home, info] is: Turkish Acronyms to live by [home, info] is, is-: Free Dictionary [home, info] is: LookWAYup Translating Dictionary/Thesaurus [home, info] Is, i's, is, is-: Dictionary/thesaurus [home, info] is: Wikimedia Commons US English Pronunciations [home, info] Art (4 matching dictionaries) is: The Organon: A Conceptually Indexed Dictionary (by Genus and Differentia) [home, info] is-: A Cross Reference of Latin and Greek Elements [home, info] I.S, IS: Glossary of Stamp Collecting Terms [home, info] IS: ODLIS: Online Dictionary of Library and Information Science [home, info] Business (7 matching dictionaries) IS: MoneyGlossary.com [home, info] IS: Travel Industry Dictionary [home, info] IS: Bloomberg Financial Glossary [home, info] is: Legal dictionary [home, info] IS, i's: Financial dictionary [home, info] IS: Glossary of Trade and Shipping Terms [home, info] IS: Alphabetical catalogue of companies. [home, info] Computing (6 matching dictionaries) IS, is: Free On-line Dictionary of Computing [home, info] IS: Netlingo [home, info] IS: BABEL: Computer Oriented Abbreviations and Acronyms [home, info] IS: Computer Telephony & Electronics Dictionary and Glossary [home, info] IS: Webopedia [home, info] IS, i's: Encyclopedia [home, info] Medicine (3 matching dictionaries) IS, is, is-: online medical dictionary [home, info] IS: Hepatitis C Information Central [home, info] i's, is, is(o)-, is-: Medical dictionary [home, info] Miscellaneous (4 matching dictionaries) IS: Navajo Code Talkers' Dictionary [home, info] IS(OGTT), IS: Acronym Finder [home, info] IS, is: AbbreviationZ [home, info] IS: United States Postal Service Official Abbreviations [home, info] Science (4 matching dictionaries) is: Dictionary of Botanical Epithets [home, info] is: Misunderstood Physics Terms [home, info] is: MATH SPOKEN HERE! [home, info] is: A Dictionary of Quaternary Acronyms and Abbreviations [home, info] Slang (1 matching dictionary) I.S, I.S, I's: Urban Dictionary [home, info] Tech (4 matching dictionaries) is: Webster's New World Telecom Dictionary [home, info] I.S, IS, Is: GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING [home, info] IS: DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations [home, info] IS: PhotoNotes Dictionary of Film and Digital Photography [home, info] (Note: See i for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (I) ▸ noun:  the 9th letter of the Roman alphabet ▸ noun:  the smallest whole number or a numeral representing this number ("He has the one but will need a two and three to go with it") ▸ noun:  a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks) ▸ adjective:  used of a single unit or thing; not two or more ("`ane' is Scottish") ▸ Also see i ▸ Word origin